Interfacial Shear Stress in Kenaf/Polyethylene Terephthalate Fiber Reinforced Polyoxymethylene Composite

2015 ◽  
Vol 786 ◽  
pp. 74-78
Author(s):  
Yakubu Dan-Mallam ◽  
M.S. Abdul Majid ◽  
Mohamad Zaki Abdullah
Keyword(s):  
Interfacial Shear Stress ◽  
Single Fibre ◽  
Interfacial Shear ◽  
Interfacial Bonding ◽  
Test Method ◽  
Compression Moulding ◽  
Pull Out ◽  
Kenaf Fibre ◽  
The Matrix ◽  
Fibre Reinforced Polymer

The mechanical properties of fibre reinforced polymer composites strongly depend on the interfacial bonding between fibre and matrix. The main objective of this paper is to compare the interfacial bonding between kenaf fibre reinforced POM with that of PET fibre reinforced POM in a hybrid composite. Continuous twisted kenaf, and PET yarn were used for the investigation. Each fibre yarn was half embedded in POM by compression moulding. The yarns were extracted from the matrix by single fibre pull out test method. The result of the investigation revealed that the interfacial shear strength of approximately 31.4 MPa between kenaf and POM is higher compared to 24.3 MPa obtained between PET fibre and POM. This may be due to higher surface energy of kenaf fibre with respect to POM in the composite The FESEM micrograph further demonstrates good interfacial adhesion between kenaf and POM in the composite.

scholarly journals A Method to Measure the Interfacial Shear Stress for Optical Fibres Embedded in Fibre Reinforced Composites

2002 ◽  
Vol 11 (5) ◽  
pp. 096369350201100 ◽  
Author(s):  
J A Etches ◽  
G F Fernando
Keyword(s):  
Interfacial Shear Stress ◽  
Single Fibre ◽  
Interfacial Shear ◽  
Optical Fibres ◽  
Reinforced Composites ◽  
Interfacial Bond ◽  
Interfacial Bond Strength ◽  
Pull Out ◽  
Unidirectional Glass ◽  
Fibre Reinforced Composites

This paper reports on the development of a prepreg-based fabrication technique to manufacture single fibre pull-out test specimens for conducting interfacial bond strength studies. Optical fibres were embedded in 2 and 16-ply unidirectional glass fibre prepreg and processed in an autoclave using conventional procedures. Fibre pull-out tests were conducted on these specimens and the data obtained are comparable to those reported in the literature.

scholarly journals A Special Single-Fibre Pull-Out Technique for Determining the Fiber/Cement Interfacial Bond Strength

2002 ◽  
Vol 11 (1) ◽  
pp. 096369350201100 ◽  
Author(s):  
J. M. Caceres ◽  
A. N. Netravali
Keyword(s):  
Shear Strength ◽  
Bond Strength ◽  
Interfacial Shear Strength ◽  
Single Fibre ◽  
Interfacial Shear ◽  
Specimen Geometry ◽  
Interfacial Bond ◽  
Interfacial Bond Strength ◽  
Pull Out ◽  
Fibre Cement

The paper discusses a simple specimen geometry to obtain the fibre/cement interfacial shear strength (IFSS). The specimens are easy to prepare and easy to test. The technique gives reliable and reproducible results. IFSS results for five different fibres with cement were measured. Most IFSS values obtained are in the range of 0.15 to 1.5 MPa. Despite the simplicity of the technique presented in this study, the results are in agreement with those obtained by several other researchers using different techniques and specimen geometry.

Pull-out method for direct measuring the interfacial shear strength between short plant fibers and thermoplastic polymer composites (TPC)

Holzforschung ◽  
2014 ◽  
Vol 68 (1) ◽  
pp. 17-21 ◽  
Author(s):  
Hao Wang ◽  
Genlin Tian ◽  
Hankun Wang ◽  
Wanju Li ◽  
Yan Yu
Keyword(s):  
Shear Strength ◽  
Polymer Composites ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Thermoplastic Polymer ◽  
Plant Fibers ◽  
Important Indicator ◽  
Pull Out ◽  
Research Activities ◽  
The Matrix

Abstract Thermoplastic polymer composites reinforced with short plant fiber are worldwide in focus of research activities. Interfacial shear strength (IFSS) is an important indicator for evaluating the bonding quality between the fiber and the matrix polymer. However, the direct measurement of IFSS is especially difficult in the case of short fibers. In the present article, a method is proposed to this purpose, which is related to the known “fiber pulling out” methodology. In the case of single bamboo fibers, the IFSS in a polypropylene (PP) matrix was on, an average, of 5 MPa, which can be considered as weak. Scanning electron microscopy images revealed a rough inner surface in PP cavities left after fiber pulling out. This is direct evidence that a mechanical interlocking mechanism is active in the interphase between the hydrophilic fibers and the hydrophobic matrix.

Stress Distribution of the Composites Reinforced by Slub-Like Short Fibers

2007 ◽  
Vol 353-358 ◽  
pp. 389-391 ◽  
Author(s):  
Li Xin Dong ◽  
Guang Ze Dai ◽  
Xian Feng Zhou ◽  
L.L. Liu ◽  
Qing Qing Ni
Keyword(s):  
Shear Stress ◽  
Stress Distribution ◽  
Textile Industry ◽  
Axial Stress ◽  
Interfacial Shear Stress ◽  
Interfacial Shear ◽  
Reinforced Composites ◽  
Stress Distributions ◽  
Short Fibers ◽  
The Matrix

The model of slub-like short fibers reinforced composites is suggested from the viewpoint of bamboo in the nature and patterns characteristic of simulated silk PET used in textile industry. The stress distributions in the enlarged-end fiber and in the matrix are analyzed. The axial stress in the fiber and matrix is found to increase and the interfacial shear stress decrease with the radius of the enlarged end.

scholarly journals Bolt Pull-Out Tests of Anchorage Body under Different Loading Rates

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Tong-bin Zhao ◽  
Wei-yao Guo ◽  
Yan-chun Yin ◽  
Yun-liang Tan
Keyword(s):  
Shear Stress ◽  
Axial Force ◽  
Interfacial Shear Stress ◽  
Interfacial Shear ◽  
Interfacial Stress ◽  
Particle Flow Code ◽  
Mechanical Transmission ◽  
Loading Rates ◽  
Pull Out ◽  
Distribution Rule

Based on the force analysis and mechanical transmission mechanism of grouting bolts, the self-developed test apparatus for interfacial mechanics is used to study the distribution rule of axial force and interfacial stress of bolts in anchorage body. At the same time, pull-out tests of anchorage body are simulated with the particle flow code softwarePFC2D, and stress distribution and failure patters are researched under different loading rates. The results show that the distribution of axial force and interfacial shear stress is nonuniform along the anchorage section: axial force decreases, shear force increases first and then decreases, and the maximum value of both of them is closed to the pull-out side; with the increase of loading rates, both of axial force and interfacial shear stress show a trend of increase in the upper anchorage section but changes are not obvious in the lower anchorage section, which causes serious stress concentration; failure strength of pull-out and loading rates show a linear correlation; according to loading rates’ impact on the anchoring effect, the loading rates’ scope can be divided into soft scope (v<10 mm/s), moderate scope (10 mm/s <v< 100 mm/s), and strong scope (v>100 mm/s).

scholarly journals Study of Betel Nut Husk Fibre Reinforced Polymer Composite

2019 ◽  
Vol 6 (2) ◽  
pp. 378-385
Author(s):  
Hoo Tien Nicholas Kuan ◽  
Kennedy Jadum ◽  
Mahshuri Yusof ◽  
Sim Nee Ting ◽  
Chee Khoon Ng
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Volume Fraction ◽  
Hardness Test ◽  
Betel Nut ◽  
Compression Moulding ◽  
The Matrix ◽  
Fibre Reinforced Polymer ◽  
Scanning Electron

The mechanical properties of oxo-biodegradable high-density polyethylene (oxo-HDPE) composites reinforced betel nut husk (BNH) fibre were studied in this research. A neat oxo-HDPE laminate and four betel nut fibre reinforced oxo-HDPE composites were fabricated using hot press compression moulding method. The composites contain 7%, 12%, 17%, and 22% fibres volume fraction respectively. The cross section of the composite was observed under scanning electron microscopy (SEM) and all five laminates are put through tensile test and hardness test. The result of the study shows that adding betel nut husk (BNH) fibres as reinforcement increases its tensile strength, specific tensile strength, and hardness of the composites. The good lamination observed under scanning electron microscopy (SEM) enable good transfer and distribution of stresses from the matrix to the fibres.

Estimation of Fiber-Matrix Interfacial Shear Strengths in Lignocellulosic-Thermoplastic Composites

1992 ◽  
Vol 266 ◽  
Author(s):  
A. R. Sanadi ◽  
R. M. Rowell ◽  
R. A. Young
Keyword(s):  
Molecular Weight ◽  
Composite Materials ◽  
Sample Preparation ◽  
Fiber Composite ◽  
Interfacial Shear ◽  
Thermoplastic Composites ◽  
Low Molecular Weight ◽  
Pull Out ◽  
The Matrix ◽  
Fiber Matrix

AbstractThe interaction and adhesion between fibers and the matrix in composite materials have a significant influence on the properties of the fiber composite. It is, therefore, of utmost importance to be able to evaluate the properties of the interface/ interphase of the fiber-matrix for optimization of the properties of the composites. Techniques that are currently used to evaluate the properties of this region will be discussed with special attention to lignocellulosicthermoplastic composites. Sample preparation, applicability, problems and advantages of each technique will be highlighted. Results obtained at our laboratory for wood-low molecular weight polyethylene systems using the pull-out test will be discussed.

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